(1)
Giovannini, E. N. Geometry, Formalism and Intuition: David Hilbert and the Formal Axiomatic Method (1891-1905). Rev. Filos. (Madr.) 2014, 39 (2), 121-146. https://doi.org/10.5209/rev_RESF.2014.v39.n2.47307.